Hello Pavel,
Many people what have such functionality. But it's not possible in OpenEXR. It's lack of exr format. Thursday, August 19, 2010, 4:23:19 PM, you wrote: > Hi! > I need to save an EXR file with several channels (for example > RGBA+Depth+AmbientOcclusion) in a kind of strange way. I'd like to save > the RGBA channels first and then, after some time, add a Depth channel > and then the other channel (layer, whatever) into the same file. I tried > this by first setting the header to have all necessary channel (names) > and then filling a framebuffer first with RGBA channels only, writing > pixels, then creating another framebuffer with depth channel (and same > header), writing pixels and so on. This is obviously not the right > approach, since I ended up with a file containing only the last channel > :-) (I first tried R, then GBA for example). > The reason for wanting to create the single file in several passes is > memory constraints (the images will be rather big, generated in Direct3D > and I don't want to hold all of them in memory at once). Is it even > possible? > I'm using Imf::OutputFile (scan-lines). > Many thanks! (my first post, hopefully correctly sent) -- Best regards, Pavel Ledin aka Puppet mailto:pup...@rambler.ru Lighting & Shading TD, Animaccord Moscow, Russia _______________________________________________ Openexr-devel mailing list Openexr-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/openexr-devel
